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Site News

CodeProject.TV launches tomorrow! Evidently we're no longer allowed to crack bottles of champagne against the servers when we launch new stuff so we'll have to find a substitute. Prosecco?

CodeProject.TV is our technical training marketplace that enables training providers and individual educators to share their knowledge through short, high-quality videos. We built it for us because we are bad at commitments and have no spare time, so it's short 5-10 mins training videos for less than the price of a coffee. No subscriptions, no need to buy full courses. Just take what you need, when you need it.

At last check we're going to have nearly 1,000 videos on offer from some amazing partners who are covering ASP.NET, Java, HTML5, Ruby on Rails and tons more. For the past few weeks our patient and forgiving beta testers have been giving it a workout and on Tuesday it's your chance. It's a whole new way to grab training videos. We hope you love it, but most importantly we hope CodeProject.TV helps you.

cheers,
Chris Maunder

SpreadsheetGear 2012 for .NET Now Available! New WPF and Silverlight controls, multithreaded recalc, 64 new Excel compatible functions, save to XPS, improved efficiency and performance, Windows 8 support and more. Download your fully functional SpreadsheetGear trial Today!

Weekly Poll Results

This week's survey: What Browsers do you support with your web applications

Most popular new articles

• ToDoList 6.6.5 Feature Release - An effective and flexible way to keep on top of your tasks - .dan.g.
  
• Creating a Glass Button using GDI+ - Lukasz Swiatkowski
  
• Simple Popup Control - Lukasz Swiatkowski
  
• WPF: Data Virtualization - Paul McClean
  
• Learn MVC (Model View Controller) step by step in 7 days – Day 1 - Shivprasad koirala
  

Latest Additions

104 articles overall. 37 new, 67 updated.

New articles added

Algorithms & Recipes

• The Designing of a Logic Reasoning Methodology - Ming Landers
  Article about designing of a logic reasoning system
  
  

Applications & Tools

• Creating an MSI Package for C# Windows Application Using a Visual Studio Setup Project - Akhil_Mittal
  In this article I would like to explain a step by step process to create a windows application and a setup installer for the same in a very simple manner, that is easy to understand and follow knowing that there are a number of other ways to do the same thing.
  
  
• Simple one page RestSharp based console application for the DropBox Cloud service - boris_oleinic
  The article describes how to use the RestSharp SDK to build an application for the DropBox Cloud service.
  
  

ASP.NET

• Publish a post on Facebook wall using Graph API - Md.Mobidul Islam(Moin)
  
  
  
• Work with MS Excel and ADO.NET - rajendrakumar K
  This article will guide the developers on how you can connect to excel files using ADO.NET and modify the sheets
  
  

Client side scripting

• SIM.JS - Discrete Event Simulation in JavaScript - gadha1098
  A general-purpose Discrete Event Simulation library written entirely in JavaScript
  
  

Database

• How To Import Data From .MDF File To SQL Server and from SQL Server to Excel - srinivas pitla
  How to import data from a .mdf file to SQL Server and from SQL Server to Excel
  
  

Interviews

• A Coder Interview With Chris Pardo - CodeProject
  Welcome to our continuing series of Code Project interviews in which we talk to developers about their backgrounds, projects, interests and pet peeves. In this installment we talk to Chris Pardo, a Senior Product Manager at Dun and Bradstreet.
  
  

Product Showcase

• Integrate Version Control to Your ECM Application - Dynamsoft
  Integrate Version Control to Your ECM Application
  
  
• Amazon Mobile App SDK Eclipse Plugin—Making it Easy to Integrate Amazon APIs into Your Android Apps - Amazon
  If you’re new to the Amazon Mobile App SDK, it provides APIs, tools, and resources to leverage the features and services offered by Amazon.
  
  

Selection Controls

• Cascading Selection the MVC Way - Xomega Team
  How to easily implement cascading selection the MVC way and leverage cached static data.
  
  

Usability

• How to Build Powerful Search Forms - Xomega Team
  A design pattern and implementation example for building advanced search forms
  
  

Windows Communication Foundation

• How to Build Flexible and Reusable WCF Services - Xomega Team
  Design Patterns and best practices for building flexible and reusable WCF services.
  
  
• WCF - Message Exchange Patterns (MEPs) - Shemeer NS
  WCF - Message Exchange Patterns Detailed Explanation With a Sample Winform Client Application, Synchronous, Request-Reply, One-Way, Duplex, svcutil, Add Service Reference, WCF - C# Winform
  
  

Windows Mobile

• Pocket PC Development using Pelles C - Azim Zahir
  This article describes how we can develop pocket PC applications using Pelles C IDE.
  
  

Windows Presentation Foundation

• Take MVC to the Next Level in .NET - Xomega Team
  How to quickly build reusable and flexible WPF, Silverlight, or ASP.NET applications with the powerful Xomega Framework using the best MVVM principles.
  
  
• Asynchronous Access of Web Service from WPF with Busy Indicator and Abort Feature - Nejimon CR
  Implement WCF web service access from WPF with busy indicator and premature cancellation feature without using delegates, background worker, or separate event procedure
  
  

Articles updated

.NET Framework

• POLAR - Creating a Virtual Machine in .NET - Paulo Zemek
  A tutorial explaining how to create a Virtual Machine and a Compiler for such virtual machine
  
  

Ajax

• Roll your own: A JavaScript router - Sebastiaan Meijerink
  Build your own JavaScript router.
  
  

Algorithms & Recipes

• Polynomial Equation Solver - Kenneth Haugland
  Solves 1st, 2nd, 3rd and 4th degree polynominal by explicid fomulas for real coefficients and any degree by the numerical Jenkins-Traub algorithm with real and complex coefficients.
  
  

Android

• Fountain OpenGL Application Walkthrough - mikew67
  Create a basic fountain scene using OpenGL ES 1.1
  
  
• Writing an Android GUI using C++: Part 4 - Activity - li9705
  The example given in this article is similar to the previous article, except that it is written with C++.
  
  
• Encryption Wrapper for Android SharedPreferences - danabr
  This article explains why and how you should protect your app's settings from prying eyes
  
  

Applications & Tools

• ToDoList 6.6.5 Feature Release - An effective and flexible way to keep on top of your tasks - .dan.g.
  A hierarchical task manager with native XML support for custom reporting.
  
  
• XSS vulnarability detection tool for JSP - Prasad Khandekar
  A tool to detect unsafe use of EL which leads to XSS Vulnarability
  
  

ASP.NET

• Learn MVC (Model View Controller) step by step in 7 days – Day 1 - Shivprasad koirala
  As the article's name says, learn MVC. Ao the agenda is simple, we are going to learn ASP.NET MVC in 7 days.
  
  
• "How to series" about MVC, jQuery, JSON, paging, mapRoute - necmettin demir
  "How to series" about MVC, jQuery, JSON, paging, mapRoute.
  
  
• Real Time Commenting using SignalR and XSLT - Amir Jalilifard
  How to make a real time commenting feature using SignalR.
  
  

Audio and Video

• Managed Media Aggregation using Rtsp and Rtp - jfriedman
  Walks a developer through the implementation of a standards compliant RtspClient and RtspServer.
  
  

Button Controls

• Creating a Glass Button using GDI+ - Lukasz Swiatkowski
  How to create an animating glass button using only GDI+ (and not using WPF)
  
  

C#

• Understand how bitwise operators work (C# and VB.NET examples) - ProgramFOX
  This article explains how bitwise operators work and this article explains also several purposes of them with examples in C# and VB.NET.
  
  
• Asynchronous models and patterns - Florian Rappl
  An introduction to async / await, popular mistakes and solutions for asynchronous programming, as well as usages and benefits from using asynchronous programming. We will also discuss interesting patterns based on concurrency.
  
  
• Run Windows Store Apps From Desktop - Shai Raiten
  How to work with Windows Store apps from a Desktop application - Run, Get App State, Stop, and more.
  
  
• CIMTool for Windows Management Instrumentation - Part 3 - Espen Harlinn
  A first take on code generation for WMI, and a bit of magic for the WPF DataGrid
  
  

Charts, Graphs and Images

• HTML5 Bar Chart - Marcelo Ricardo de Oliveira
  A jQuery plugin for a 3D Bar Chart.
  
  

Client side scripting

• JavaScript namespacing - Sebastiaan Meijerink
  Creating namespaces through a function.
  
  

CodeProject FAQs

• Code Project Tags FAQ - Thiru Thirunavukarasu
  This is an FAQ about the use of tags. It can be modified by any Silver member.
  
  

Collections

• Indexer - Index large collections by different keys on memory or disk - Paulo Zemek
  This article presents a library that allows you to index large collections of objects by different keys in memory or disk and also explains how it was created.
  
  

Cross Platform

• MvvmCross TipCalc - Step 6: Creating a WPF UI - slodge
  Step 6 in the TipCalc tutorial for MvvmCross v3 - Hot Tuna
  
  

Database

• DBTool for Oracle - Part 1 - Espen Harlinn
  Enhance productivity and reliability, write your own tools.
  
  
• How to execute multiple long running SQL Statements Asynchronously in small chunks - Khorshed Alam, Dhaka
  How to execute multiple long running SQL Statement Asynchronously in smaller chunks
  
  
• A Comparison on Data Access Methods - Part 1 - Dr. Song Li
  This is the part 1 of a comparison on the Data Access Methods in the .Net Environment.
  
  

Debug Tips

• yaolog: A powerful, easy-use, cross-platform C++ log utility - Neil_lu
  A powerful, easy-use, cross-platform C++ log utility.
  
  

Design and Architecture

• Object Oriented Design Principles - Marla Sukesh
  This article is intended for who have at least basic idea about Object oriented programming.
  
  
• Dependency Inversion Principle, IoC Container, and Dependency Injection (Part - 3) - Chinmaya_Champatiray
  This is the third part of article on Dependency Injection. It explains how to develop a simple IoC container.
  
  

Files and Folders

• Directory Mirror using the FileSystemWatcher class - Luc Archambault
  An application that monitors a directory and maintains a copy of it.
  
  
• Rendering PDF Documents with Mupdf and P/Invoke in C# - wmjordan
  Converting PDF into Bitmaps without installing extra components.
  
  
• Named Binary Tag serialization - Alberto Molero
  This article describes the file format NBT and shows how can be implemented in a real application to store data.
  
  

General Graphics

• ExifLib - A Fast Exif Data Extractor for .NET 2.0+ - Simon McKenzie
  Reads JPEG Exif data without the heavyweight and unnecessary instantiation of GDI+ objects.
  
  

Internet / Network

• MailMergeLib - A .NET Mail Client Library - Norbert Bietsch
  MailMergeLib is a SMTP mail client library. It makes use of .NET System.Net.Mail and provides comfortable mail merge capabilities. MailMergeLib corrects a number of the most annoying bugs and RFC violations that .NET 2.0 to .NET 4.0 suffer from.
  
  
• A full library for a Socket Client/Server system - Alessandro Lentini
  My article shows a library that everyone can use to create their socket communication. Also it explains how the library is developed.
  
  
• Asyncsocket Part 3: The Server - bkelly13
  Use of Windows class CAsynSocket in TCP/IP application
  
  

Libraries

• ThinkUino Project - Antonio Blescia
  Interact with Arduino board from our brain
  
  

Localisation

• Fixing Optional Calendars for Persian Culture in .NET - Babak Mahmoudi
  This article describes how to fix CultureInfo for Persian culture so that .NET developers can use PersianCalendar.
  
  

Miscellaneous

• Simple Popup Control - Lukasz Swiatkowski
  How to create a custom pop-up control in C#.
  
  

PHP

• PHP MVC with .NET like controller - Sebastiaan Meijerink
  A PHP MVC modal that mimics C# like Controllers.
  
  

Shell and IE programming

• Notifying Windows Explorer about files in use - Lukasz Swiatkowski
  How to notify Windows Explorer about which files are used and locked by your application.
  
  

Silverlight

• Understand MVVM Using PRISM by Hello World Silverlight Application - Avtar Singh Sohi
  Understand MVVM using PRISM by Hello World Silverlight application.
  
  

Threads, Processes & IPC

• Passing arguments to a threaded LongRunningProcess - VSNetVbHarry
  Implement a progress bar and pass arguments to a LongRunningProcess.
  
  

Validation

• ASP.NET MVC - reCAPTCHA and Email Confirmation - Shai Raiten
  How to add reCAPTCHA and email confirmation to your ASP.NET MVC site.
  
  

VB.NET

• VDialog (Vista TaskDialog for Windows XP) - Lukasz Swiatkowski
  Vista-like TaskDialog control for .NET Framework 2.0, compatible with Windows XP
  
  
• Dynamic Events in VB.NET - Vozzie2
  How to handle dynamic, late binding, events for COM objects in VB.NET.
  
  

Windows Communication Foundation

• WCF: From a Beginner's perspective & a Tutorial - Anurag Sinha V
  This article tries to dig in as to what is WCF, how to code WCF services
  
  

Windows Mobile

• Blood Pressure Tracker, Win 8 Phone Based HealthVault App - Ranjan.D
  Blood Pressure Tracker is a Win 8 Phone application for tracking the blood pressure , interacts with HealthVault for storing and fetching the blood pressure information
  
  

Windows Presentation Foundation

• WPF: Data Virtualization - Paul McClean
  A collection class providing data virtualization with large data sets.
  
  
• 420 Frames Per Second - Paulo Zemek
  This article presents a class to manage enumerator based animations in WPF that can deal with different framerated animations independent of the hardware framerate
  
  
• WPF Form Designer Prototype (MVVM) - AdolfoPerez
  Form designer with editable display properties and bindings. Generates XAML forms.
  
  
• Baktun Shell: Hosting WPF Child Windows in Another Process - Ivan Krivyakov
  Baktun Shell is a demo app that hosts its child windows in separate processes.
  
  

Windows Runtime

• Extending GridView with Drag and Drop for Grouping and Variable Sized Items - Irina Pykhova, Greg Lutz
  This article describes the implementation of an extended GridView control that enables drag and drop with grouping and variable sized items.
  
  

New Tips and Tricks added

ASP.NET

• How to fix Column 'InvariantName' is constrained to be unique - AlbertoLeon CSharpMan
  The build of Web.Debug.Config throws the error as value 'MySql.Data.MySqlClient' is already present.
  
  
• How to fix the 'object' does not contain a definition for error - AlbertoLeon CSharpMan
  When build a View with a ViewBag containing a property that references a class.
  
  

COM / COM+

• How to Release COM Interop Objects so the Called Program Can Exit - Mike Meinz
  The COM Interop Runtime Callable Wrapper (RCW) is a "Black Box" that creates references to memory that need to be released before the called program will end.
  
  

HTML / CSS

• CSS3 is not working in IE7, IE8 - Alok Gupta From Bangalore
  This article is targeted to people who are involved in designing of web based applications and want to give rich look and feel of web based application in all browsers using CSS3.
  
  

Libraries

• Encode and Decode messages send to and from apps - serup
  Makes message handling between applications easier, by encoding/decoding to/from one data block.
  
  

Programming Tips

• Running Java Code on the fly - Martin Ton
  How to run Java code on the fly
  
  

Windows Workflow Foundation

• Replay Failed Workflow - SumitJaiswal
  Knowledge sharing article on WWF.
  
  

Tips and Tricks updated

.NET Framework

• Working with Age: it's not the same as a TimeSpan! - OriginalGriff
  Working with an Age (as in a persons age) is not the same as a Timespan, and there is no simple way to return an age. This provides a class to solve this.
  
  

Algorithms & Recipes

• Math Parser .NET C# - kirnbas
  This is light, fast and simple to understand mathematical parser designed in one class, which receives as input a mathematical expression (System.String) and returns the output value (System.Double)
  
  

ASP.NET

• Like Magic, No Strings Attached - dgDavidGreene
  Helper utility replaces magic string property names.
  
  

Charts, Graphs and Images

• Submit Images to Web Service and Get Them Back - Omar Adnan Isaid
  Submit images to a web service and get them back.
  
  

Client side scripting

• JavaScript constuctor with configuration object - Sebastiaan Meijerink
  Object constructor with another object instead of named variables.
  
  
• Filter HTML table - MairajAhmed
  Select only those rows in table which meet search criteria.
  
  

Files and Folders

• Install and Setup Files - IPI Paul
  Use iPhone to install Windows software.
  
  

General Graphics

• WriteableBitmap pixel manipulation in Metro style app - M_Tamas
  Apply grayscale filter on a WriteableBitmap for Metro Style app
  
  

Internet / Network

• Simple C# FTP Class - metastruct
  Easy to use class for downloading, uploading, and other FTP commands.
  
  
• Another TCP echo server using IOCP - José Vitor
  An introduction to writing IOCP network servers
  
  

Localisation

• Multilanguage solution by using Reflection - arsser
  Choose the UI language at runtime and using XML to save the infomation.
  
  

Usability

• Mouse Control for the Physically Impaired - KazMaxLtd
  Usability for the physically impaired
  
  

New Technical Blogs added

Applications & Tools

• Checking OpenCV with PVS-Studio - viva64.com
  Checking OpenCV with PVS-Studio.
  
  

C / C++ Language

• lvalue & rvalue & && and && & - jsolutions_uk
  This post is an attempt to cement a few things in my mind as well as explain to those who are interested what on earth is going on with lvalues, rvalues and references.
  
  
• An IOC Container using Variadic Template - jsolutions_uk
  As you will see from some of my previous posts, along with developing in C++, I have also had a fair amount of experience of WPF and C#. Whilst working with these technologies, I have generally employed a Dependency Injection model rather than a Service Locator pattern, as I believe this tends to ma
  
  

Client side scripting

• PSC: Move share - Kristofer Kallsbo
  I have decided what the Power of scripting script should do! If you move a share by moving it in windows explorer the share will stop work. If you move the folder with File System Object from vbscript the share will still be there but will be pointing at the old path that no longer [...]
  
  

Date and Time

• Cardinality Estimation in Linear Time using Sub-Linear Space - danielthesolver
  The cardinality of a collection A (which might be an ordered or unordered list, a set, or what not) is basically the number of unique values in A. For example, the collections [1,2,3,4] and [1,2,1,3,1,4,3] have the same cardinality of 4 (and also correspond to … Continue reading →
  
  

Java

• Code jam "Minimum Scalar product" solution in Java - ladv02
  "Minimum Scalar product" solution in Java.
  
  
• Code jam Store Credit solution in Java - ladv02
  Store credit solution in Java.
  
  
• Facebook Hacker Cup: "Double Squares" Solution in Java - ladv02
  This program is a solution to Studious Student problem from Facebook Hacker Cup. The problem can be found here: link. The problem: A double-square number is an integer X which can be expressed as the sum of two perfect squares. … [Continue reading]
  
  
• Facebook Hacker Cup: "Studious Student" Solution in Java - ladv02
  "Studious Student" solution in Java.
  
  

PHP

• Hangman (game) script in PHP - ladv02
  Hangman (game) script in PHP.
  
  

Testing and QA

• Unit Testing: Good Idea/Bad Idea? - Zac Gery
  Unit testing is not a "one size fits all" solution. It's important to have the necessary conversations to find a happy medium.
  
  

Third Party Products and Tools

• Android, iOS and Windows Mobile…Oh My: An Introduction to PhoneGap - Keyhole Software
  With the growing adoption and reliance on smartphones and tablets in the competitive handheld industry, mobile applications need to be built across all major mobile operating platforms to reach the demanding customer base. These expectations leave mobile developers with the daunting task of building
  
  

Windows Presentation Foundation

• Binding without WPF - Nick Polyak
  Here we are going to talk about the binding concept and how it can be re-implemented outside of WPF without being tied to the visual libraries or the UI threads.
  
  

Technical Blogs updated

C / C++ Language

• Why is it building so long? - Bartlomiej Filipek
  Introduction to insulation method, for improving physical design of the code.
  
  

Internet / Network

• Designing a Peer to Peer Voice Communication Software - Mukit, Ataul
  Why let Skype go unchallenged for years and years? Maybe some of you can come up with better algorithms to top Skype and provide better alternatives to the user.
  
  

PHP

• Price comparison script with Wordpress and the REST API - Johannes Hinkov
  Price comparison script with Wordpress and the REST API.